跳到主要內容

袁黃 曆法新書

 袁黃,(1533-1606)袁家祖居浙江嘉興陶莊, 是明代重要思想家

袁黃是「文理全才」的人物。他是明朝著名的農學家、水利學家及曆法學家。譬如,他所著《曆法新書》涉及46種曆法,有歲差總數積算、五緯總數積算、推天正冬至五星自行限度、求第一東西差、求太陽食甚定分、求日月出入帶食所見分秒、求朔望交會約率、四平方求弦術、太白黃道南北緯度、黃道南北各像內外星經緯度等,共150多種求算方法,學問深邃。


 

 《曆法新書》"時差加減立成"中的小數並不是 六十進制(分,秒), 而是 百進制. 很可能受印度 或伊斯蘭學者影響

李亮 Arabic astronomical tables in China  

明史 卷31  

明史 卷三十七 志第十三 曆七 回回曆法

留言

這個網誌中的熱門文章

劣質洗衣機入水喉

上面白色是最易找到,$2x. 但漏水. 灰色, $4x, 是假冒 "MADE IN ITALY"  假冒 "MADE IN ITALY"  的標緻  左面是白色膠喉的喉頭, 右面是灰色膠喉的喉頭, 上圖左面是真正 好貨 ( MADE IN ITALY )灰色膠蓋.右面是冒牌 白色膠蓋. 膠蓋在安裝扭緊時爆開  上圖左面是真正 好貨 , 標了其他規格.右面是冒牌, 單單印了 MADE IN ITALY  好貨的膠蓋是可以下移, 露出喉頭及黑色軟膠墊 黑色軟膠墊是有坑紋. 質感較柔軟. 緊後可以"迫實"水龍頭 及喉蓋, 沒有滲漏 正板 MADE IN ITALY 賣 $4x, 價錢絕對合理. 冒牌貨在旺角新填地街買的, 也是$4x. 真是要小心!!! NB: MADE IN ITALY 是否真正 意大利制造實在無從考 証

越南香草

Ngo ~ "N-gaw" Mui ~ "Moo-ee" Ngo ~ "N-gaw" Mui ~ "Moo-ee" Ngo ~ "N-gaw" Mui ~ "Moo-ee" Ngo (N-gaw) ,  Mui  (Moo-ee )  Cilantro Coriandrum sativum, chinese parsley  Ngo Gai (N-gaw guy), Mui Tau (Moo-ee Tao), Ngo Tau (N-gaw Tao)   Mexican Coriander,  Sawtooth Coriander, Cilantro Eryngium foetidum    娥女帝(拼音), 刺芹   特徵:娥女帝是短株形的植物,氣味清淡,葉邊呈鋸齒形,十分容易辨認。來源地:越南。 功效:和白夏差不多,娥女帝亦有祛濕、解毒及驅風的療效。建議食法: Pho,  (Bánh Xeò) 越南煎餅, 炒菜,湯,咖哩 Ngo Gai ~ "N-gaw guy" Mui Tau ~ "Moo-ee Tao" Ngo Tau ~ "N-gaw Tao" - See more at: http://vietworldkitchen.typepad.com/blog/vietnamese-herb-primer.html#sthash.I9rzkzwI.dpuf Rau Ram (Rau Rahm) Vietnam Coriander, Laksa Leaf, "Vietnamese mint(actually not a mint)". Polygonum leaf Polygonum odoratum Peppery, quite spicy. In salad, soup Hung (Hoong), , Hung Lang (Hoong Lang) Spearmint.  Vietnamese coriander Hung Lui (Hoong Lou-ee), Hung ...

ES8311 and ES8388 codec IC

ES8388 audio codec module is one of the audio codec modules available that is supported by ESP32 and official ESP-ADF releases. The ES8388 module lets you have: Stereo microphone and line input Stereo headphone and line out Up to 96 kHz 24 bpp high quality audio This module is compatible with all MCUs that have I2C and I2S ports (like ESP32, ESP8266, STM32, i.MX6, Raspberry Pi, etc) ES8311 Maxgerhardt github PCBartist twblogs ESP32-A1S  (limited stock)Audio codec AC101 or ES8388 built-in. NB the pinouts and firmware are different! Arduino - ESP31-A1S instructable Phil Schatzmann and his github   Simple A2DP thaaraak github on ESP32-A1S github of Yveaux and  Marcel-licence ESP ADF   example:  Logitech PiCorePlayer squeeze lite squeezebox forum   ESP32-Audio-kit  (from AI thinker) based on ESP32-A1S, is simple and small. But upgrade-ability seems limited  Alex John Talbert mixer equalizer: can this be used as simple equalizer? how about proces...